Results 91 to 100 of about 4,637,538 (347)

Essential norm and a new characterization of weighted composition operators from weighted Bergman spaces and Hardy spaces into the Bloch space [PDF]

, 2015
In this paper, we give some estimates for the essential norm and a new characterization for the boundedness and compactness of weighted composition operators from weighted Bergman spaces and Hardy spaces to the Bloch space.
Songxiao Li, R. Qian, Jizhen Zhou
semanticscholar   +1 more source

Neutrophil deficiency increases T cell numbers at the site of tissue injury in mice

FEBS Letters, EarlyView.
In wild‐type mice, injury or acute inflammation induces neutrophil influx followed by macrophage accumulation. Mcl1ΔMyelo (neutrophil‐deficient) mice lack neutrophils, and in response to muscle injury show fewer macrophages and exhibit strikingly elevated T‐cell numbers, primarily non‐conventional “double‐negative” (DN) αβ and γδ T cells.
Hajnalka Halász, Albert Bálint Papp, Lukács Sándor Lesinszki, Attila Mócsai, Tamás Varga, László Nagy, Péter Gogolák   +6 more
wiley   +1 more source

On the Norm of Certain Weighted Composition Operators on the Hardy Space

Abstract and Applied Analysis, 2009
We obtain a representation for the norm of certain compact weighted composition operator 𝐶𝜓,𝜑 on the Hardy space 𝐻2, whenever 𝜑(𝑧)=𝑎𝑧+𝑏 and 𝜓(𝑧)=𝑎𝑧−𝑏. We also estimate the norm and essential norm of a class of noncompact weighted composition operators ...
M. Haji Shaabani, B. Khani Robati
doaj   +1 more source

Multipliers and essential norm on the Drury-Arveson space [PDF]

Proceedings of the American Mathematical Society, 2010
It is well known that for multipliers f of the Drury-Arveson space H 2 n , ∥f∥ ∞ does not dominate the operator norm of M f . We show that in general ∥f∥ ∞ does not even dominate the essential norm of M f . A consequence of this is that there exist multipliers f of H 2 n for which M f fails to be essentially hyponormal; i.e., if K is any compact,
Jingbo Xia, Quanlei Fang
openaire   +2 more sources

Development of visible light‐sensitive human neuropsin (OPN5) via single amino acid substitution

FEBS Letters, EarlyView.
The present study determines a key amino acid residue, Lys91, for defining UV sensitivity of human OPN5. Heterologous action spectroscopy of the wild type and K91 mutants of OPN5 in HEK293T cells reveals that substitution of Lys91 with neutral (alanine) or acidic amino acids (glutamic or aspartic acids) causes substantial shifts in spectral sensitivity
Yusuke Sakai, Richard J. McDowell, Robert J. Lucas   +2 more
wiley   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Trapped modes in finite quantum waveguides

, 2011
The Laplace operator in infinite quantum waveguides (e.g., a bent strip or a twisted tube) often has a point-like eigenvalue below the essential spectrum that corresponds to a trapped eigenmode of finite L2 norm.
Delitsyn, Andrey L., Grebenkov, Denis S., Nguyen, Binh-Thanh   +2 more
core   +1 more source

C9orf72 ALS‐causing mutations lead to mislocalization and aggregation of nucleoporin Nup107 into stress granules

FEBS Letters, EarlyView.
Mutations in the C9orf72 gene represent the most common genetic cause of amyotrophic lateral sclerosis (ALS), a fatal neurodegenerative disease. Using patient‐derived neurons and C. elegans models, we find that the nucleoporin Nup107 is dysregulated in C9orf72‐associated ALS. Conversely, reducing Nup107 levels mitigates disease‐related changes.
Saygın Bilican, Yara Nabawi, William Hongyu Zhang, Dunja Petrovic, Markus Wehrmann, Sara Muñoz‐García, Seda Koyuncu, David Vilchez   +7 more
wiley   +1 more source

Ab initio pseudopotential study of Fe, Co, and Ni employing the spin-polarized LAPW approach

, 1995
The ground-state properties of Fe, Co, and Ni are studied with the linear-augmented-plane-wave (LAPW) method and norm-conserving pseudopotentials.
C. D. Hu, C. Kittel, D. C. Langreth, D. J. Singh, D. M. Ceperley, D. R. Hamann, F. D. Murnaghan, G. B. Bachelet, H. S. Greenside, J. P. Perdew, J. P. Perdew, J. P. Perdew, J. P. Perdew, J. P. Perdew, J. P. Perdew, J. Zhu, J.-H. Cho, Jun-Hyung Cho, M. Körling, M. L. Cohen, Matthias Scheffler, O. Gunnarsson, P. Blaha, P. Hohenberg, S. G. Louie, T. C. Leung, U. von Barth, W. E. Pickett, W. Kohn   +28 more
core   +2 more sources

Super Poincaré Inequalities, Orlicz Norms and Essential Spectrum [PDF]

Potential Analysis, 2010
We prove some results about the super Poincar inequality (SPI) and its relation to the spectrum of an operator: we show that it can be alternatively written with Orlicz norms instead of L1 norms, and we use this to give an alternative proof that a bound on the bottom of the essential spectrum implies a SPI.
openaire   +4 more sources